Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Akihiro Otaka"'
Publikováno v:
Journal of Communications and Networks. 20:536-545
In this paper, we evaluate the wireless uplink performance and the mobile fronthaul (MFH) bandwidth of split-physical layer (PHY) processing (SPP), which is a base station (BS) functional split scheme used to link baseband units (BBUs) and remote rad
Publikováno v:
Journal of Lightwave Technology. 36:5656-5662
The application of network function virtualization (NFV) and software defined networks (SDNs) to optical access systems is attracting attention in order to quickly and cost-effectively respond to various service requests. In order to maximize the mer
Publikováno v:
IEEE Journal on Selected Areas in Communications. 36:2508-2517
In future radio access systems, since the number of mobile base stations will increase to cope with the increasing mobile traffic, the number of mobile fronthaul (MFH) links will also have to increase. To reduce the MFH link cost, MFH networking has
Autor:
Akihiro Otaka, Ken-Ichi Suzuki, Jun-ichi Kani, Toshihiro Hanawa, Sang-Yuep Kim, Takahiro Suzuki
Publikováno v:
Journal of Lightwave Technology. 36:1875-1881
In recent years, the applicability of network function virtualization and software-defined networks to optical access systems has been studied for reducing capital expenditure/operating expense and quickly responding to various service requests. We a
Autor:
Keita Nishimoto, Ken-Ichi Suzuki, Jun-ichi Kani, Yoshino Manabu, Ujikawa Hirotaka, Takashi Yamada, Akihiro Otaka, Kota Asaka
Publikováno v:
Journal of Lightwave Technology. 36:1510-1515
This paper summarizes our studies on the flexible access system architecture (FASA), which will support a wide range of services and stimulate the creation of new services in the next generation. After reviewing related concepts and technical trends,
Autor:
Ken-Ichi Suzuki, Seiya Sumita, Satoru Okamoto, Naoaki Yamanaka, Kota Asaka, Hiroyuki Saito, Takehiro Sato, Takuya Kanai, Nobuhiko Kikuchi, Jun Sugawa, Yumiko Senoo, Naoki Minato, Atsushi Oguri, Hideaki Tamai, Shunichi Matsushita, Takehiro Tsuritani, Akihiro Otaka
Publikováno v:
Journal of Lightwave Technology. 36:1516-1523
This paper shows the concept of the elastic lambda aggregation network (EλAN) that will achieve an elastic common access infrastructure for the metro-access network. It proposes a service restoration technique that uses optical path switching and in
Publikováno v:
IEEE Communications Letters. 22:498-501
Fronthaul bridged network has been a hot research topic in recent years. A challenge for existing path-control protocols for bridged networks is that the route computation is executed after the advertisement of the link fault based on the updated lin
Autor:
Akihiro Otaka
Publikováno v:
IEICE Transactions on Communications. :961-965
Autor:
Hiroyuki Uzawa, Akihiro Otaka, Daisuke Hisano, Hirotaka Nakamura, Yu Nakayama, Kenji Miyamoto, Jun Terada
Publikováno v:
IEICE Communications Express. 7:160-166
Autor:
Hiroshi Ou, Hiroyuki Uzawa, Akihiro Otaka, Daisuke Hisano, Takayuki Kobayashi, Tatsuya Shimada, Jun Terada
Publikováno v:
Journal of Lightwave Technology. 35:2788-2796
A time division multiplexing-passive optical network (TDM-PON) has been attracting attention with a view to realizing the cost-effective mobile fronthaul (MFH) of a mobile base station (BS). A cost-effective MFH is needed because a lot of BSs will be