Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Narumi Umeda"'
Publikováno v:
IEICE Transactions on Communications. :886-894
Supporting diversified rates for real-time communications will become possible and essential with the rapidly increasing transmission rates provided by the 4th generation (4G) mobile communication systems. In this paper, a novel wireless Quality of S
Publikováno v:
IEICE Transactions on Communications. :3541-3545
A multihop connection scheme, where one or more mobile temiinals relay transmission signals using the same access scheme between an end user terminal and its destination base station, is a promising approach to overcome reduction in cell size caused
Autor:
Yoshihiro Ishikawa, Narumi Umeda
Publikováno v:
Electronics and Communications in Japan (Part I: Communications). 80:90-99
Publikováno v:
The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring..
Mobile IPv6 cannot achieve seamless handoff for both UDP communications such as voice over IP (VoIP) and TCP communications such as FTP, since bursty packet loss during handoff degrades their transmission quality. In order to present completely burst
Publikováno v:
Advances in Multimedia Information Processing — PCM 2002 ISBN: 9783540002628
IEEE Pacific Rim Conference on Multimedia
IEEE Pacific Rim Conference on Multimedia
Managing voice service quality over both IP-based wired and wireless networks has become a challenge, especially in a heterogeneous network environment. This paper discusses the issues that affect voice quality in a mobile wireless network. We compar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::504aeff8b3901a4bbe37f1c24a05ad21
https://doi.org/10.1007/3-540-36228-2_85
https://doi.org/10.1007/3-540-36228-2_85
Autor:
Yoshihiro Ishikawa, Narumi Umeda
Publikováno v:
Mobile Multimedia Communications ISBN: 9781489901538
In code division multiple access (CDMA) systems, call admission control (CAC) plays a very important role because it directly controls the number of users. CAC must be designed to guarantee a grade of service (GoS) the blocking rate, and quality of s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2f43fb8462c84bdb9e21996a8705a00
https://doi.org/10.1007/978-1-4899-0151-4_6
https://doi.org/10.1007/978-1-4899-0151-4_6
Publikováno v:
The proceedings of the JSME annual meeting. :87-88
Autor:
Narumi Umeda, Kiyoshi Matsumoto, Tadashi Taguchi, Morihito Inagaki, Yasuyuki Enomoto, Kotaro Tezuka
Publikováno v:
The proceedings of the JSME annual meeting. :323-324
Autor:
Hiroshi Matsushita, Yasutomo Kaneko, Narumi Umeda, Shigenori Watanabe, Kozo Ikeda, Kazuyoshi Miyagawa, Teruaki Namba
Publikováno v:
The proceedings of the JSME annual meeting. :25-26
Conference
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