TCP Rate Adjustment for Wireless Access Changes
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Solution Overview
Problem
The existing TCP protocol is inefficient in rapidly adjusting data transmission rates in response to changes in wireless communication bandwidth due to access changes, leading to unnecessary packet loss and resource wastage in 5G communication systems.
Innovation Solution
A device and method that includes a controller in both the TCP reception and transmission devices to determine access changes between different Radio Access Technologies (RATs) and adjust the TCP transmission rate accordingly, using optimistic TCP ACK messages and bandwidth information to quickly adapt to changes in bandwidth, thereby optimizing data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the TCP protocol is used for data transmission in wireless communication systems, then reliability of data transmission is improved, but the speed of adapting to bandwidth changes deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the receiving device detects access changes and bandwidth variations, then sends control messages (such as optimistic ACKs or explicit bandwidth indication messages) back to the transmitting device. This feedback loop enables the transmitting device to rapidly adjust its transmission rate according to actual bandwidth conditions, resolving the contradiction between maintaining TCP reliability and achieving fast bandwidth adaptation.
Solution Approach 2:
The patent employs preliminary action by having the receiving device detect access changes before they fully impact transmission performance. When an access change is detected, the receiving device proactively sends control messages to the transmitting device to pre-adjust the transmission rate, preventing packet loss and optimizing bandwidth utilization before problems occur.
2Stability of the object's composition
If the TCP transmission rate is not adjusted rapidly in response to bandwidth changes, then stability of transmission is maintained, but productivity deteriorates due to resource wastage
Solution Approach 1:
The patent transforms the static TCP transmission rate into a dynamic parameter that automatically adjusts to bandwidth conditions. The system maintains stability through controlled adaptation rather than rigid fixed-rate transmission, allowing the transmission rate to flexibly respond to access changes while preventing the resource wastage that would occur with unadjusted transmission rates.
Solution Approach 2:
The patent changes the transmission rate parameter in response to detected bandwidth variations. When access changes are detected, the system modifies key transmission parameters (such as window size, segment size, or rate control factors) to optimize data flow, thereby improving productivity without compromising transmission stability through uncontrolled changes.
3Productivity
If the TCP transmission rate is increased rapidly in response to bandwidth increase, then productivity is improved, but reliability deteriorates due to potential packet loss
Solution Approach 1:
The receiving device detects access changes and bandwidth increases before the transmitting device would naturally detect them through packet acknowledgments. By sending proactive control messages (such as optimistic ACKs or bandwidth indication messages) in advance, the system enables the transmitting device to increase the transmission rate smoothly and appropriately, improving productivity while avoiding the packet loss that would result from overly aggressive rate increases.
Data Source
AI summary
The present disclosure relates to a 5G or pre-5G communication system to be provided in order to support a higher data transmission rate than a 4G communication system such as LTE. The present disclosure relates to a device and method for transmitting and/or receiving data in a wireless communication system. The present disclosure enables determining whether an access change occurs from a first node using a first Radio Access Technology (RAT) to a second node using a second RAT and enables transmitting information instructing to adjust the TCP transmission rate to a TCP transmission device when an access change occurs from the first node to the second node.