Paper Abstract and Keywords |
Presentation |
2016-01-22 13:20
QZSS Short Message SS-CDMA Communication: Consideration of Fairness in Random Access Control Scheme with Reservation Channel Kei Ohya, Tomohide Takahashi, Suguru Kameda (Tohoku Univ.), Hiroshi Oguma (NIT, Toyama College), Akinori Taira, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi (Tohoku Univ.) SR2015-85 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
The Quasi-Zenith Satellite System (QZSS) is expected to provide a high accurate positioning service and allows two-way communication which includes terminal location and short messages. For realizing the random access control scheme of the QZSS short message communication, we have proposed Flag Method and reservation channel (R-Ch) scheme. However, there is unfairness between the number of collisions and the time required to accommodate a mobile terminal. In this paper, we propose an efficient random access control scheme to improve the fairness among the mobile terminals. The proposed scheme can reduce the accommodation time to achieve the complementary cumulative distribution function (CCDF) of $10^{-5}$ by about 26$%$ at the expense of about 3$%$ of the average accommodation time. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Quasi-Zenith Satellite System (QZSS) / satellite communication / short message / spread spectrum code division multiple access (SS-CDMA) / random access control / / / |
Reference Info. |
IEICE Tech. Rep., vol. 115, no. 411, SR2015-85, pp. 87-94, Jan. 2016. |
Paper # |
SR2015-85 |
Date of Issue |
2016-01-14 (SR) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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SR2015-85 |
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