2014 – Present
Chair Professor
HKUST, Department of ECE
2009 – Present
Founder & Director
Huawei-HKUST Joint Innovation Lab
2005 – Present
Technology Advisor
Huawei Technologies Limited
2003 – Present
Technology Advisor
ASTRI
2006 – 2025
Expert Witness (Patent Litigation), Standard Essential Patent Analysis
Bird & Bird, Lovells, Communication Authority (HKSAR)
2019 – 2025
Chair of Telecommunication Affair Committee (TAC)
Communication Authority, HKSAR
2019 – 2025
Member of Communication Authority
HKSAR
2020 – 2026
Member of Competition Commission
HKSAR
2010 – 2014
Professor
HKUST, Department of ECE
2004 – 2010
Associate Professor
HKUST, Department of ECE
2003 – 2004
Associate Professor
University of Hong Kong
2001 – 2003
Expert Witness (Litigation)
Hon and Co
2001 – 2003
Non-executive Director
Seamatch Technology Ltd.
1997 – 2003
Member of Technical Staff
Bell Labs, Lucent Technologies, New Jersey
1992 – 1995
System Engineer
PCCW (formerly Hong Kong Telecom)