Latency-Optimal Beam Sweeping for Millimeter-Wave Communications

Yen Chih Kuo, Shao Yu Lien, Der-Jiunn Deng, Yueh Jir Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Utilizing spectrum above 6 GHz (i.e., millimeterwave, mmWave) to enjoy wider bandwidth as compared with that of spectrum below 6 GHz of crowded arrangement has been regarded as an inevitable remedy to sustain high throughput and low latency communications. Suffering from severe signal attenuation, transmission range using mmWave however could be limited, which is a critical concern especially unfavorable for mobile networks. This issue consequently renders beamforming technology as a mandatory function for mmWave communications, but continuous beam sweeping may be inevitable due to the inherent mobility of each user equipment (UE). This operation could be a dominating factor to invoke unacceptable access latency nullifying engineering merits of mmWave. In this paper, we consequently derive foundations of the latency-optimal beam sweeping scheme. For initial access without mobility knowledge, a two-prime modular clock based beam sweeping scheme is proposed to generate beam sweeping sequences, which guarantee bean alignment with the theoretically optimum latency performance. For subsequent access with mobility knowledge, we further derive essential propositions to achieve the ideal performance. The provided scheme consequently offers inevitable principles for the standardization and designs for mmWave based mobile networks.

Original languageEnglish
Title of host publication2018 IEEE Globecom Workshops, GC Wkshps 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538649206
Publication statusPublished - 2019 Feb 19
Event2018 IEEE Globecom Workshops, GC Wkshps 2018 - Abu Dhabi, United Arab Emirates
Duration: 2018 Dec 92018 Dec 13

Publication series

Name2018 IEEE Globecom Workshops, GC Wkshps 2018 - Proceedings


Conference2018 IEEE Globecom Workshops, GC Wkshps 2018
CountryUnited Arab Emirates
CityAbu Dhabi

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Hardware and Architecture
  • Safety, Risk, Reliability and Quality

Fingerprint Dive into the research topics of 'Latency-Optimal Beam Sweeping for Millimeter-Wave Communications'. Together they form a unique fingerprint.

Cite this