Efficient random access control scheme with reservation channel for QZSS short message SS-CDMA communication

Kei Ohya, Tomohide Takahashi, Suguru Kameda, Hiroshi Oguma, Akinori Taira, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchl

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

9 Citations (Scopus)

Abstract

Quasi-Zenith Satellite System (QZSS) is expected to provide a high accurate positioning service and allows two-way communication which includes the terminal location and short messages. For QZSS short message spread-spectrum code-division multiple access (SS-CDMA) communication, Flag Method was proposed as access control scheme. It is always able to communicate in optimum state which channel efficiency of 36.8 % is best. However, the channel efficiency is low even in optimum state. In this paper, we propose reservation channel (R-Ch) as an access control scheme which improves the upper limit of channel efficiency. In R-Ch, collision due to random channel selection is suppressed by selecting channels in multiple steps, and the channel efficiency is improved up to 84.0 %. Time performances of accommodating 3 million mobile terminals when using Flag Method only and Flag Method with R-Ch are shown. Flag Method with R-Ch can reduce the time by half compared with Flag Method only.

Original languageEnglish
Title of host publication2016 IEEE Wireless Communications and Networking Conference, WCNC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467398145
DOIs
Publication statusPublished - 2016 Sep 12
Event2016 IEEE Wireless Communications and Networking Conference, WCNC 2016 - Doha, Qatar
Duration: 2016 Apr 32016 Apr 7

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
Volume2016-September
ISSN (Print)1525-3511

Other

Other2016 IEEE Wireless Communications and Networking Conference, WCNC 2016
CountryQatar
CityDoha
Period16/4/316/4/7

Keywords

  • 1-bit flag
  • Flag Method
  • Frame Slotted ALOHA
  • Global Positioning System (GPS)
  • Quasi-Zenith Satellite System (QZSS)
  • access control

ASJC Scopus subject areas

  • Engineering(all)

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    Ohya, K., Takahashi, T., Kameda, S., Oguma, H., Taira, A., Suematsu, N., Takagi, T., & Tsubouchl, K. (2016). Efficient random access control scheme with reservation channel for QZSS short message SS-CDMA communication. In 2016 IEEE Wireless Communications and Networking Conference, WCNC 2016 [7565147] (IEEE Wireless Communications and Networking Conference, WCNC; Vol. 2016-September). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WCNC.2016.7565147