Mycroft Liu

Mycroft Liu

Chief executive officer at Vivatlantis
Email: liux4418 at umn dot edu
Office: 117 Pleasant St SE, Digital Technology Center Suite 487, Minneapolis, MN 55455

Qingxu "Mycroft" Liu. American MENSA member. Founder & CEO of Vivatlantis.


University of Minnesota-Twin Cities

Computer Science and Mathematics

SEP 2017 - May 2020, SEP 2021 - PRESENT

Nanjing Foreign Language School

Middle School & High School

IB Diploma Program

SEP 2011 - May 2017


Chief executive officer

Vivatlantis, LLC

Founder & CEO of Vivatlantis.

Feb 2022 - Present

Research Assistant

University of Minnesota-Twin Cities

Advisor: Prof. Zhi-Li Zhang
Qwest Chair Professor and McKnight Distinguished University Professor at the University of Minnesota-Twin Cities

5G mmWave Researcher
A First Look at Commercial 5G Performance on Smartphones
Official Website
Lumos5G: Mapping and Predicting Commercial mmWave 5G Throughput
Official Website

Android Developer
Developed 5GTracker app which collects information such as 5G/4G network status, tower handoff status, GPS, etc. from the devices.

Web Developer
United States 5G Coverage Map

Network Researcher
Using NFQueue and Scapy to analyze IoT data.
Developed a lab server management system. (On going)

MAY 2019 - May 2021

Information Security Internship

Volvo Cars (Asia-Pacific)

Supported security supervision, operation and maintenance in all digital projects. Built up internal security tools with open source software. Involved in data loss prevention and compliance projects. Lead the investigation on one serious security incident and found the hacker.

JUL 2020 - OCT 2020

Software Engineer Internship

Linkage Info, LLC   (Former NASDAQ Symbol: ASIA)

Supported software engineering in School-Parents Communication Platform project. Used CentOS, Oracle SQL, Java, Spring, etc. on regular basis. Best intern student award.

JUN 2019 - AUG 2019


Some Paper
  • Lumos5G: Mapping and Predicting Commercial mmWave 5G Throughput
    Arvind Narayanan, Eman Ramadan, Rishabh Mehta, Xinyue Hu, Qingxu Liu, Udhaya Kumar Dayalan,
    Rostand Fezeu, Saurabh Verma, Peiqi Ji, Tao Li, Feng Qian, Zhi-Li Zhang
    ACM IMC 2020, Remote Conference, October, 2020
  • A First Look at Commercial 5G Performance on Smartphones
    Arvind Narayanan, Eman Ramadan, Jason Carpenter, Qingxu Liu, Yu Liu, Feng Qian, Zhi-Li Zhang
    WWW 2020, Taipei, Taiwan, April, 2020

All Publications


Programming Languages & Tools
  • English
  • Mandarin


  • American Mathematics Competition (AMC12) World Top 1%
  • American MENSA Member
  • Dean's List - University of Minnesota-Twin Cities


Most importantly

- FC Barcelona fan
- Love traveling
- Love playing golf

All other hobbies