mmS-TCP: Scalable TCP for Improving Throughput and Fairness in 5G mmWave Networks

Area of Science:

• Computer Science
• Electrical Engineering
• Telecommunications

Background:

• Millimeter-wave (mmWave) bands offer multi-gigabit per second data rates crucial for 5G networks.
• mmWave signals face significant degradation due to blockage, impacting TCP performance.
• Existing TCP protocols struggle with the dynamic channel conditions of mmWave networks.

Purpose of the Study:

• To propose a novel congestion control algorithm for 5G mmWave networks.
• To ensure sufficient throughput and maintain TCP fairness in mmWave environments.
• To improve the stability and efficiency of TCP in the face of mmWave signal challenges.

Main Methods:

• Modification of the Scalable TCP (S-TCP) protocol.
• Development of mmWave Scalable TCP (mmS-TCP).
• Simulation experiments in realistic mobile user environments.

Main Results:

• mmS-TCP achieved up to 2.4 times higher throughput than CUBIC TCP in single-flow evaluations.
• The inter-protocol fairness index improved from 0.819 (S-TCP) to 0.9733 when competing with CUBIC.
• Reduced duplicated ACKs by 1/4 compared to S-TCP, enhancing overall performance.

Conclusions:

• mmS-TCP offers a stable and efficient solution for TCP congestion control in 5G mmWave networks.
• The proposed algorithm successfully balances high throughput with TCP fairness.
• mmS-TCP demonstrates significant improvements in throughput, fairness, and reliability for mmWave communication.