Wireless Signal Transmission Prioritizing Control Over Data
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Solution Overview
Problem
In wireless communication systems using TCP/IP, high data transmission speeds lead to increased delays and decreased throughput due to the need to handle numerous ACK/NACK signals, with control signals having the same priority as data, resulting in delayed data transmission and the Tx window full effect, which interrupts new data transmission.
Innovation Solution
A signal transmission method and apparatus that separates control signals and data, prioritizing the transmission of control signals before data by storing them in a protocol stack queue using a predetermined scheme, allowing control signals to be transmitted prior to data, thereby preventing delays and improving throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data transmission speed is increased, then throughput is improved, but data transmission delay increases due to handling numerous ACK/NACK signals
Solution Approach 1:
The patent segments packet signals into control signals (ACK/NACK) and data signals, then applies different transmission priorities and queuing mechanisms to each type. Control signals are transmitted with higher priority through a separate queue, while data signals use another queue, allowing independent optimization of transmission timing for each signal type and reducing overall data transmission delay.
Solution Approach 2:
The patent implements preliminary action by transmitting control signals before data signals when both are ready for transmission. The controller checks whether control signals are available and transmits them first, ensuring that acknowledgment information is sent before data packets, thereby preventing the Tx window full effect and maintaining high data transmission speed.
2Device complexity
If control signals are transmitted with same priority as data, then protocol simplicity is maintained, but data transmission is delayed due to control signal transmission
Solution Approach 1:
The patent applies local quality by assigning different transmission priorities to different types of signals within the same protocol stack. Control signals receive higher priority than data signals, and this priority differentiation is implemented locally at the signal transmission level without requiring complex protocol modifications throughout the entire communication system. The controller selectively transmits control signals first based on their higher priority status.
3Ease of manufacture
If all packet signals have same priority, then implementation simplicity is maintained, but throughput decreases due to Tx window full effect
Solution Approach 1:
The patent introduces dynamic priority assignment where control signals are assigned higher transmission priority than data signals. This dynamic differentiation allows the system to adapt transmission behavior based on signal type, preventing the Tx window full effect by ensuring control signals are sent first, thereby maintaining high throughput while keeping the implementation relatively simple through priority-based queuing.
4Speed
If data is transmitted continuously without receiving ACK/NACK, then transmission speed is maintained, but transmission reliability decreases due to Tx window full effect
Solution Approach 1:
The patent implements preliminary action by transmitting control signals (ACK/NACK) before data signals when both are ready. This ensures that acknowledgment information is sent in advance, allowing the receiver to maintain an open transmission window and continue receiving data without interruption, thereby maintaining both high transmission speed and reliability by preventing the Tx window full effect.
Data Source
AI summary
A signal transmission method and apparatus in a wireless communication system using Transmission Control Protocol/Internet Protocol (TCP/IP). The signal transmission apparatus divides packet signals to be transmitted into a control signal and data, stores the control signal and the data in a protocol stack queue using a predetermined scheme such that the control signal is transmitted prior to the data, and transmits the control signal and the data in order of storage in the protocol stack queue.